Hi, I bought the 5 pack of cables anker sells, and have not have good luck with them. Has anyone else found them to not be as great as they expected?

They start off really nice, tight, clicky, and then get looser.

There was also an incident where the micro usb end got a little bit wet, after leaving the cable to dry out for days they do not work at all, I'm not sure if this is a safety feature?

I bought these from a seller on eBay, and because of that Anker has said they will not cover the warranty of these because I didn't buy them directly from Anker, (Anker shipping is expensive)

I am now thinking of just buying some Dynamix cables as they seem good for the money.

Also, I notice they sell a more expensive 'PowerLine" cable, has anyone found these to be better than their standard black ones